Leon 2007 vs Leon 2008 TDI setups

this year I've decided to give the Leon TDI a try. Since I have almost all of the setups already prepared for the Leon 2007 (petrol fueled), I was wondering what I should take care of when tuning up setups for TDI.

OK, one thing sure are gear ratios, but as far as I know TDIs have problem with understeering and increased front tyre wear. So, what to do to decrease tyre wear. Are there any other specifics related to TDIs?